Not sure I’ve ever heard of champion hitches. Maybe a B&W companion hitch, which is a very good hitch. For a big toy hauler like that, I’d look at the B&W.
Nothing wrong with a Reese either as long as it is rated for the weight of the pin weight of the rig as well as the GVW of the trailer.

I kinda feel asking for the best hitch is a little like asking for the best truck. You’re going to get a lot of opinions as to which is the best.

I personally have a Curt Q25 and it has done just fine for the past year and a half.